Mammals of Korea: a review of their taxonomy, distribution and conservation status Author Jo, Yeong-Seok Author Baccus, John T. Author Koprowski, John L. text Zootaxa 2018 2018-11-19 4522 1 1 216 journal article 27944 10.11646/zootaxa.4522.1.1 58e0c7c5-75ec-4b1b-beb0-d01527f710f9 1175-5326 2610198 C24EFA8A-A5A0-4B06-A0A9-632F542B9529 Key to the genera of Delphinidae in Korea 1 Dorsal fin absent............................................................................. Lissodelphis - Dorsal fin present..................................................................................... 2 2 Blunt head, no prominent beak........................................................................... 3 - Long head, beak present................................................................................ 8 3 Upper teeth absent; 3–7 lower teeth on each side of jaws (maybe absent or extensively worn); forehead with deep vertical crease........................................................................................ Grampus - Upper and lower teeth present............................................................................ 4 4 Flipper broad, paddle-shaped, rounded tip; dorsal fin pointed, tall, erected; female 0.9 m in length, male 1.8 m in length; striking black and white coloration..................................................................... Orcinus - Dorsal fin pointed, < 0.8 m .............................................................................. 5 5 Dorsal fin with broad base, located on anterior 1/3 body; dorsal fin low and falcate; bulbous head; long sickle-shaped flippers.......................................................................................... Globicephala - Dorsal fin located on central body........................................................................ 6 6 Elbow-shaped flipper; prominent hump; lips black................................................... Pseudorca - Flipper slightly rounded; no hump; lips white............................................................... 7 7 Teeth <15 each side (8–10 upper jaw, 10–13 lower jaw).................................................. Feresa - Teeth>15 each side (20–26 upper jaw, 22–25 lower jaw).......................................... Peponocephala 8 Beak smoothly joins forehead........................................................................ Steno - Beak with sharp crease where joins forehead................................................................ 9 9 Dark lateral striped from face to anus........................................................... Lagenodelphis - Lateral striped absent or not continued from face to anus..................................................... 10 10 Discrete, short beak <3% body length; large pale gray bifurcated patches from forehead to tail............ Lagenorhynchus - Distinct beak>3% body length.......................................................................... 11 11 Teeth>39 each tooth row.............................................................................. 12 - Teeth 18–29 on each tooth row; sharp crease where beak joins forehead.................................... Tursiops 12 Hourglass pattern present on each side.............................................................. Delphinus - Hourglass pattern on each side absent................................................................ Stenella